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DESCRIPTION JP2011055182

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DESCRIPTION JP2011055182
PROBLEM TO BE SOLVED: To provide a projector and the like capable of performing audio mute
and the like independently even when there are a plurality of audio input units. SOLUTION: A
projector 100 has a microphone input terminal 110 to which a first audio signal is input, a line
input terminal 114 to which a second audio signal is input, a first audio signal and a second
audio signal. An audio amplification unit 170 that amplifies a synthesized audio signal to
generate a third amplified audio signal, an audio output unit 172 that outputs a third audio based
on the third amplified audio signal, and input operation information Information generation unit
for generating mute instruction information based on the operation information input unit 120,
the storage unit 140 storing instruction data 142 indicating the correspondence between the
button and the instruction content, the operation information, and the instruction data 142 The
control unit 160 is configured to perform mute control based on 130 and the mute instruction
information. [Selected figure] Figure 3
Projector and mute control method
[0001]
The present invention relates to a projector and a mute control method.
[0002]
There has been proposed a projector having a function of performing image mute (non-display of
image) and audio mute (mute).
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For example, in Japanese Patent Application Laid-Open No. 2003-280087, when A / V mute
selection input is performed, processing such as image mute and audio mute is performed, and
processing such as image mute without audio mute is performed. It has been described that.
[0003]
Japanese Patent Application Publication No. 2003-280087
[0004]
However, in the publication, the method of audio mute is not specifically described.
For example, even in the case of having a plurality of audio input units (for example, a
microphone input terminal and a line input terminal), the projector can only collectively perform
mute activation or mute cancellation.
[0005]
For this reason, the user needs to mute only the microphone with the switch mounted on the
microphone, and can not mute when the microphone itself has no switch. Also, howling and noise
may occur due to the release of the mute when the microphone switch is in the ON state and not
used.
[0006]
In addition, since the usage condition of the microphone is different between the home projector
and the business projector, the projector needs to perform appropriate audio output control
according to the type of the projector. For example, a microphone connected to a projector is
used as karaoke for home use and as a loudspeaker for business use, so the usage purpose of the
microphone differs depending on the type of projector.
[0007]
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2
Some aspects of the present invention provide a projector and a mute control method capable of
independently performing audio mute and the like even when there are a plurality of audio input
units by solving the above problems. It is a thing.
[0008]
A projector according to one aspect of the present invention includes a first audio input unit to
which a first audio signal is input, a second audio input unit to which a second audio signal is
input, and the first audio input unit. A voice output unit that executes a process of outputting a
voice corresponding to at least one of a voice signal and the second voice signal; an operation
information input unit into which operation information by an operation of at least one button is
input; A mute instruction for a first voice corresponding to the first voice signal, based on a
storage unit storing instruction data indicating correspondence with instruction content, the
operation information, and the instruction data; An information generation unit for generating
mute instruction information indicating a mute instruction for the second voice corresponding to
the voice signal or the mute instruction for the first voice and the second voice, and the mute
control based on the mute instruction information Characterized in that it comprises a control
unit that performs.
[0009]
A mute control method according to one aspect of the present invention includes a first audio
input unit to which a first audio signal is input, and a second audio input unit to which a second
audio signal is input; A voice output unit that executes a process of outputting a voice
corresponding to at least one of the first voice signal and the second voice signal; and an
operation information input unit to which operation information by an operation of at least one
button is input A computer included in a projector including a storage unit storing instruction
data indicating the correspondence between the button and the instruction content; a computer
corresponding to the first audio signal based on the operation information and the instruction
data; A mute instruction for indicating a mute instruction for the first voice, a mute instruction
for the second voice corresponding to the second voice signal, or a mute instruction for the first
voice and the second voice And, based on the mute instruction information, and performs mute
control.
[0010]
According to the present invention, the projector stores instruction data and performs mute
control according to the operation, thereby performing audio mute and the like independently
even when there are a plurality of audio input units. it can.
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[0011]
Further, the instruction data may be provided for each type of the projector, and the information
generation unit may generate the mute instruction information based on the type of the
projector, the operation information, and the instruction data. .
[0012]
According to this, even when the content of the muffling control differs depending on the type of
the projector, the projector can perform the appropriate muffling control according to the type of
the projector.
[0013]
In addition, the projector adjusts a gain of the first audio signal from the first audio input unit to
adjust a volume of the first audio, and the second gain adjustment unit. A second gain adjustment
unit for adjusting the volume of the second audio signal by adjusting the gain of the second audio
signal from the audio input unit; and the first gain adjustment unit from the first gain adjustment
unit. An audio amplification unit for amplifying at least one of the second audio signal from the
second gain adjustment unit and the second audio signal adjustment unit, and the control unit
performs a mute instruction for the first audio; When the muffling control is performed on the
first gain adjustment unit, and the muffling instruction for the second sound is performed, the
muffling control is performed on the second gain adjustment unit, and the first sound and the
first sound For the second voice Or if an instruction sound perform the mute control on the first
gain adjustment section and the second gain adjustment section, or may perform the mute
control on the audio amplifier section.
[0014]
According to this, even when audio signals are input from a plurality of audio input units, the
projector can perform appropriate mute control on each audio.
[0015]
Further, the first audio signal is a microphone audio signal, and the second audio signal is an
audio signal other than the microphone audio signal, and the control unit is configured to output
a microphone to the first audio input unit. The muffling control may be performed based on a
microphone detection signal indicating that a terminal is connected.
[0016]
According to this, the projector can perform appropriate mute control according to the operation
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even in the situation where the microphone sound and the sound other than the microphone
sound are simultaneously input.
[0017]
In addition, the projector includes an image generation unit that generates an image, and a
projection unit that projects the image, and the information generation unit instructs not to
display the image based on the operation information and the instruction data. The control unit
may control the image generation unit based on the non-display instruction information to
generate an image according to the non-display control.
[0018]
According to this, the projector can perform appropriate non-display control not only for sound
but also for an image.
[0019]
It is an outline view of a projector in a 1st example.
FIG. 2A is an external view of a remote controller for a home projector in the first embodiment,
and FIG. 2B is an external view of a remote controller for a business projector in the first
embodiment.
It is a functional block diagram of a projector in a 1st example.
It is a figure which shows an example of the instruction | indication data for household-use
projectors in a 1st Example.
It is a figure which shows an example of the instruction | indication data for the projector for
business in a 1st Example.
It is a flowchart which shows the mute control procedure in a 1st Example.
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It is a functional block diagram of a projector in a 2nd example.
It is a figure which shows an example of the instruction | indication data in a 2nd Example.
It is a flowchart which shows the setting procedure of the instruction | indication data in a 2nd
Example.
It is a figure which shows an example of the instruction | indication image in a 2nd Example.
[0020]
Hereinafter, an embodiment in which the present invention is applied to a projector will be
described with reference to the drawings.
Note that the examples shown below do not limit the contents of the invention described in the
claims at all.
Further, all the configurations shown in the following embodiments are not necessarily essential
as means for solving the invention described in the claims.
[0021]
First Embodiment FIG. 1 is an external view of a projector 100 according to a first embodiment.
The projector 100 is a portable projector incorporating a DVD drive unit. On the back of the
projector 100, a microphone input terminal to which microphone sound is input, an audio
terminal, a video terminal, a component terminal, a USB terminal and the like are provided. The
types of the projector 100 include home use and business use, and their specifications are
slightly different.
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[0022]
FIG. 2A is an external view of a remote controller (remote controller) 200-1 for household
projectors in the first embodiment, and FIG. 2B is a projector for business projectors in the first
embodiment. It is an outline view of remote control 200-2.
[0023]
For example, in the remote control 200-1 for home projectors, a break button 211 for nondisplaying an image and muffling a microphone sound and a line sound, a mute button 220 for
muffling a microphone sound and a line sound, a microphone A microphone input level button
230 for adjusting the input level of the audio signal, an input detection button 240 for detecting
a signal being input, and the like are provided.
[0024]
On the other hand, remote control 200-2 for professional use projectors has the same
configuration as remote control 200-1, but A / V mute to hide the image and mute the line sound
at the position of break button 211. A button 212 is provided.
That is, when the break button 211 is pressed, muffling of the microphone sound is also
performed, but when the A / V mute button 212 is pressed, muffling of the microphone sound is
not performed.
[0025]
This is because, for example, in the case of the projector 100 for home use, since it is used in a
relatively narrow space, there is a high possibility that the microphone is not used in a state
where the image is not displayed. Because the microphone may be used in a wide space, the
microphone may also be used with the image hidden.
[0026]
The projector 100 according to the present embodiment has a function of performing mute
control (image non-display control and sound muting control) according to the type of the
projector 100.
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In addition, the projector 100 according to the present embodiment has a function of performing
various mute control in accordance with a user instruction.
[0027]
Next, functional blocks of the projector 100 having such a function will be described.
FIG. 3 is a functional block diagram of the projector 100 in the first embodiment. The projector
100 includes a microphone input terminal 110 connected to a microphone terminal connected to
a microphone, a microphone amplifier unit 112 for amplifying a microphone audio signal from
the microphone input terminal 110, a line input terminal 114, and the microphone amplifier unit
112. And a level detection unit 194 that detects the level of the line audio signal from the line
input terminal 120.
[0028]
The projector 100 further includes a first gain adjustment unit 150 that adjusts the volume of
microphone sound by adjusting a gain (coefficient), and a second gain that adjusts the volume of
line sound by adjusting the gain. An adjusting unit 152, a mixing unit 196 for combining (mixing)
the microphone audio signal from the first gain adjusting unit 150 and the line audio signal from
the second gain adjusting unit 152, and an audio signal from the mixing unit 196 It comprises
the audio | voice amplification part 170 to amplify, and the audio | voice output part 172 which
outputs an audio | voice based on the amplified audio | voice signal from the audio | voice
amplification part 170. FIG.
[0029]
Further, the projector 100 generates instruction information according to the operation
information input unit 120 to which the operation information from the remote control 200 is
input, the storage unit 140 storing the instruction data 142 and the like, the operation
information, the instruction data 142 and the like. An image generating unit 130, a control unit
160 for controlling the first gain adjusting unit 150 and the like according to instruction
information, an image input terminal 192 to which an image signal is input, and an image
generating an image according to an image signal and the like It includes a generation unit 180
and a projection unit 190 that projects an image.
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8
[0030]
The microphone input terminal 110 functions as a first audio input unit to which a microphone
audio signal that is a first audio signal is input, and the line input terminal 114 receives a line
audio signal that is a second audio signal. Function as a second voice input unit.
Further, the audio amplification unit 170 has a function of performing a process of amplifying
the audio signal in which the first audio signal and the second audio signal are synthesized to
generate a third amplified audio signal, and the audio output unit 172 has a function of
outputting a third voice based on the third amplified voice signal.
[0031]
Further, to the line input terminal 114, for example, an audio signal from an external device (for
example, a CD player, a DVD player, a PC, etc.), an audio signal from the built-in DVD drive unit,
an audio signal from a USB memory, etc. are input.
[0032]
In addition, the projector 100 may function as these units using the following hardware.
For example, the projector 100, the operation information input unit 120 may be an infrared
light receiving unit that receives infrared light from the remote control 200, the information
generation unit 130, the control unit 160 may be a CPU, etc., the storage unit 140 may be a nonvolatile memory, etc. The image processing circuit etc., the projection unit 190 is a lamp, liquid
crystal panel, liquid crystal drive circuit, lens etc., the level detection unit 194, the first gain
adjustment unit 150, and the second gain adjustment unit 152 function as an audio controller. A
digital signal processor or the like may be used.
The other parts are general terminals, amplifiers, speakers and the like.
[0033]
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9
Here, the instruction data 142 will be described in more detail. FIG. 4 is a diagram showing an
example of instruction data 142-1 for home projectors in the first embodiment. FIG. 5 is a
diagram showing an example of instruction data 142-2 for business-use projectors in the first
embodiment.
[0034]
The instruction data 142 includes instruction data 142-1 for home projectors and instruction
data 142-2 for business projectors. As the items of the instruction data 142, for example, a
button for enabling mute, a button for canceling mute, a target for mute instruction (image, line
audio, microphone audio) and the like correspond. The projector 100 determines instruction data
142 to be used according to the type of the projector 100.
[0035]
For example, when muting all images, line voices and microphone voices, the user presses the
break button 211 if it is a home projector, and presses the A / V mute button 212 if it is a
business projector before the microphone input level button Press 230 Also, for example, when
only the microphone sound is muted, the user presses the mute button 220 and then the input
detection button 240 regardless of the type of the projector 100.
[0036]
Thus, the user can issue various mute instructions only by operating the button of the remote
control 200.
[0037]
Next, the mute control procedure in the first embodiment will be described.
FIG. 6 is a flowchart showing a mute control procedure in the first embodiment.
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10
[0038]
The information generation unit 130 determines whether or not there is a mute instruction
operation based on the operation information from the operation information input unit 120
(step S1). For example, since the break button 211 and the A / V mute button 212 have the same
button ID, the information generation unit 130 presses the button ID of two types (the break
button 211 or the A / V mute button 212 and the mute button 220) By determining the
operation, it can be determined whether or not there is a mute instruction operation.
[0039]
In the present embodiment, as shown in FIGS. 4 and 5, the first button pressed at the time of the
mute instruction operation is one of the break button 211, the A / V mute button 212, and the
mute button 220.
[0040]
Further, when there is a mute instruction operation, the information generation unit 130
generates at least one of non-display instruction information and mute instruction information
based on the type of the projector 100, the operation information, and the instruction data 142
(step S2) .
It is assumed that data indicating the type of the projector 100 is stored in the storage unit 140
or the like as a flag or the like.
[0041]
The control unit 160 determines whether or not the image is mute based on the instruction
information from the information generation unit 130 (step S3), and performs non-display
control on the image generation unit 180 when it is the image mute (step S3) S4). The image
generation unit 180 generates a monochrome image such as black and white according to the
non-display control.
[0042]
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Further, the control unit 160 determines whether or not the microphone sound is mute based on
the instruction information from the information generation unit 130 (step S5), and determines
whether the line sound is mute if the microphone sound is mute. (Step S6). In addition, the
control unit 160 determines whether or not the line audio mute is performed even when the
microphone audio mute is not performed (step S7).
[0043]
When the microphone audio mute is performed and the line audio mute is performed, the control
unit 160 performs mute control (stops the output of the audio amplification unit 170) to the
audio amplification unit 170 (step S8). When the microphone audio mute is not performed and
the line audio mute is not performed, the control unit 160 performs mute control (gain is set to
0) to the first gain adjustment unit 150 (step S9). If the microphone audio is not muted and the
line audio is muted, the control unit 160 performs mute control on the second gain adjustment
unit 152 (step S10).
[0044]
Note that, as shown in FIGS. 4 and 5, when the user performs the mute release operation, the
user presses the same button as the first button pressed as the mute instruction. For example,
when there is a mute operation instruction, the information generation unit 130 stores the
button ID of the first button pressed, and when the button ID having the same button ID is
pressed in the mute state, Generate mute cancellation instruction information. The control unit
160 ends the mute control according to the mute release instruction information.
[0045]
As described above, according to this embodiment, the projector 100 stores the instruction data
142, and the first gain adjustment unit 150, the second gain adjustment unit 152, or the audio
amplification unit 170 according to the operation content. By performing mute control on the
other hand, even when there are a plurality of voice input units such as the microphone input
terminal 110 and the line input terminal 114, voice mute and the like can be performed
independently.
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[0046]
Further, according to the present embodiment, by providing the instruction data 142 for each
type of the projector 100, the projector 100 may use the type of the projector 100 even if the
muffling control content is different depending on the type of the projector 100. Accordingly,
appropriate silencing control can be performed.
[0047]
Further, according to the present embodiment, the projector 100 can perform appropriate nondisplay control not only for sound but also for an image.
[0048]
Furthermore, according to the present embodiment, the projector 100 can perform appropriate
muting in accordance with the use situation.
For example, when the user uses the projector 100 at a party hall, the user can use the
microphone to proceed with the party while muting the image and the line audio, and unmute
the image and the line audio to be DVD Can be performed while playing back, and the
microphone sound and the line sound can be muted to reproduce moving image data stored in
the USB memory.
[0049]
As described above, according to the present embodiment, the user can perform mute activation
and mute cancellation according to the use situation only by operating the button of the remote
control 200.
Thus, the projector 100 can improve the ease of use of the projector 100 by the user.
[0050]
Second Embodiment The projector may allow the user to edit instruction data.
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Next, an embodiment in which the user edits the instruction data will be described.
[0051]
FIG. 7 is a functional block diagram of the projector 101 in the second embodiment. The storage
unit 141 of the projector 101 stores, in addition to the instruction data 143, image data 144 for
generating an instruction image or the like for editing the instruction data 143. Further, the
information generation unit 131 has a function of updating the instruction data 143 according to
the operation information, and the image generation unit 181 has a function of generating an
image based on the image data 144. The function of each part other than these is the same as
that of the first embodiment, so the description will be omitted.
[0052]
FIG. 8 is a view showing an example of instruction data 143 in the second embodiment. The
instruction data 143 is set so that mute can be enabled or mute can be released by pressing the
number button of the remote control 200. For example, in the normal state, the user can mute
the image, line audio and microphone audio by pressing the “1” button of the remote control
200.
[0053]
Here, the setting procedure of the instruction data 143 will be described. FIG. 9 is a flowchart
showing the setting procedure of the instruction data 143 in the second embodiment.
[0054]
The information generation unit 131 determines whether or not there is a confirmation change
instruction of the instruction data 143 based on the operation information from the operation
information input unit 120 (step S11). For example, the user gives a confirmation change
instruction of the instruction data 143 by giving an instruction to display the environment
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setting menu or the like.
[0055]
When the confirmation change instruction of the instruction data 143 is received, the
information generation unit 131 generates instruction information for generating an instruction
image, and the control unit 160 controls the image generation unit 181 according to the
instruction information. The image generation unit 181 generates an instruction image based on
the instruction data 143 and the image data 144 according to the control, and the projection unit
190 projects the instruction image (step S12).
[0056]
FIG. 10 is a view showing an example of the instruction image 300 in the second embodiment.
The user presses the up, down, left, and right buttons of the remote control 200 to move the
cursor indicated by the hatched portion in the instruction image 300, and presses a desired
number button on the remote control 200 to assign or change buttons for performing mute
instruction operations.
[0057]
The information generation unit 131 determines, based on the operation information from the
operation information input unit 120, whether or not there is a change instruction of a button for
performing a mute instruction operation (step S13). When there is a button change instruction,
the information generation unit 131 updates the instruction data 143 according to operation
information (for example, cursor position information, button ID of the pressed number button,
etc.) indicating the change instruction ( Step S14).
[0058]
Further, the information generation unit 131 determines whether there is a setting end
instruction based on the operation information from the operation information input unit 120
(step S15). For example, the user issues a setting termination instruction by pressing the
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determination button of the remote control 200.
[0059]
The projector 101 continues the processing of steps S12 to S15 when there is no setting
termination instruction, and ends the processing when there is no setting termination instruction.
The mute control procedure is the same as that of the first embodiment, so the description will
be omitted.
[0060]
As described above, also in the present embodiment, the projector 101 exhibits the same effects
as those of the first embodiment. Further, according to the present embodiment, the user can
perform a desired mute instruction by performing a desired operation.
[0061]
Other Embodiments The application of the present invention is not limited to the abovedescribed embodiments, and various modifications are possible. For example, the mixing unit
196 is not an essential component, and the projectors 100 and 101 amplify the first audio signal
from the first gain adjustment unit 150 to generate a first amplified audio signal. A second audio
amplifying unit for amplifying the second audio signal to generate a second amplified audio
signal, and outputting a first audio based on the first amplified audio signal; An audio output unit
may be configured to output a second audio based on the amplified audio signal.
[0062]
Further, the operation for performing the mute instruction and the mute release instruction is
not limited to the above-described embodiment, and the device for performing the operation is
not limited to the remote controller 200. For example, the operation may be an operation of
simultaneously pressing a plurality of buttons, a touch operation or a movement operation on a
touch panel or a pen tablet, a keyboard operation, a mouse operation, or the like. Further, when
the commercial projector detects that the A / V mute button 212 is pressed, and when the home
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projector detects that the break button 211 is pressed, the projector 100 reduces the
microphone input level. The microphone sound may be muted. According to such a
configuration, the microphone sound can be muted by one action, and the convenience is
enhanced.
[0063]
Further, the control unit 160 stores the original gain value at the time of mute control to the first
gain adjustment unit 150 or the second gain adjustment unit 152, and performs gain adjustment
with the original gain value at the time of mute cancellation instruction. Thus, the first gain
adjustment unit 150 and the second gain adjustment unit 152 may be controlled. In addition,
when muting both the microphone sound and the line sound, the control unit 160 performs the
mute control on the first gain adjustment unit 150 and the second gain adjustment unit 152
instead of the audio amplification unit 170. Good.
[0064]
Further, the image generation units 180 and 181 may generate an image (for example, a user
logo image or the like) set by the user based on the image data 144 at the time of instruction to
mute the image. Also, the combination of the first voice and the second voice is not limited to the
combination of the microphone voice and the line voice. For example, the first voice may be voice
input from an external device, and the second voice may be voice based on voice data stored in
the internal memory. In addition, even when the projectors 100 and 101 have three or more
audio input units, it is possible to individually mute the audio signals from the respective audio
input units.
[0065]
In addition, the projector 100 may function as each unit of the above-described projector 100 by
reading a program stored in an information storage medium.
[0066]
Further, the projector 100 is not limited to a liquid crystal projector (transmission type, reflection
type such as LCOS), and may be, for example, a projector using a digital micro mirror device.
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Also, the functions of the projector 100 may be distributed to a plurality of devices (for example,
a PC and a projector).
[0067]
100, 101 projector, 110 microphone input terminal (first audio input unit), 112 microphone
amplifier unit, 114 line input terminal (second audio input unit), 120 operation information input
unit, 130, 131 information generator, 140 , 141 storage unit, 142, 143 instruction data, 144
image data, 150 first gain adjustment unit, 152 second gain adjustment unit, 160 control unit,
170 audio amplification unit, 172 audio output unit, 180, 181 image generation Unit, 190
projection unit, 200 remote control, 211 break button, 212 A / V mute button, 220 mute button,
230 microphone input level button, 240 input detection button, 300 indication image
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